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2 years ago

Evaluate the expression for x = 2

Mathematics

1 answer:

Lena [83]2 years ago

3 0

Answer:

the last one is -4 the first one -2 I think

Step-by-step explanation:

im at this level of math

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Sherry has a package in the shape of a rectangular prism. What is the volume, in cubic inches (in.), of the rectangular prism? (

Rudiy27

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete as the dimension of the prism is not given. However, the following steps can serve as a guide for you.

The volume of a rectangular prism is calculated as thus:

$Volume = Length * Width * Height$

So, Take for instance

$Length = 2\ in$

$Width = 3\ in$

$Height = 4\ in$

The Volume would be:

$Volume = 2\ in * 3\ in * 4\ in$

$Volume = 24\ in^3$

7 0

2 years ago

Hopefully someone is going to know this

Reptile [31]

Answer:

The correct answer would be C

Step-by-step explanation:

I hope this helps, if it doesn't then just message me and ill be more than happy to help :)

8 0

1 year ago

Simplify this equation 7(2x)

RoseWind [281]

Answer:

14x

Step-by-step explanation:

7 x 2 = 14

since we are multiplying 2x by 7 its 14x

5 0

2 years ago

A fence for a rectangular garden with one side against an existing wall is constructed by using 60 feet of fencing. What is the

Y_Kistochka [10]

Step-by-step explanation:

A fence for a rectangular garden with one side against an existing wall is constructed by using 60 feet of fencing.

Perimeter of rectangle (3 sides)= 60 feet

Let 'x' be the width of the wall

$Perimeter = 2(length)+2(width)\\60=2(length)+2x\\\\60-2x=2(length)\\\frac{60-2x}{2} =length\\Length =30-x$

Formula for the area of the rectangle is

$Area=length \cdot width\\A=length(x)$

Replace the length we got using perimeter

$A=(30-x)(x)\\A(x)= 30x-x^2$

To find out the maximum are we take derivative

$A'(x)= 30-2x\\0=30-2x\\-30=-2x\\x=15$

find out second derivative to check whether x=15 is maximum

$A''(x)=-2$

second derivative is negative

So, Maximum area at x=15

To find maximum area we plug in 15 for x in A(x)

$A(x)=30x-x^2\\A(15)=30(15)-15^2\\A(15)=225$

So, maximum area is 225 square feet

3 0

3 years ago

Find the real numbers x and y that make the equation true.<br> -4+yi = x+3i

vesna_86 [32]

Answer:

x = -4

y = 3

Step-by-step explanation:

To get the values of x and y, you have to compare both sides of the equation.

For both sides to be equal,

yi must equal 3i

And x equal -4

yi = 3i-------------------------- divide through by i

y = 3

And x = -4'

4 0

2 years ago

Read 2 more answers